As you are walking along a beach,you find an animal and believe that it belongs to the class Asteroidea.Which of the following characteristics would support your hypothesis that the animal is a sea star and not another type of echinoderm?
A) It is pentaradially symmetric.
B) It has five arms.
C) It feeds on other animals.
D) It has a hydrostatic skeleton,formed from its water vascular system.
E) Its central region is not well-delineated from its appendages.
Correct Answer:
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